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simple, as you go down the group the period number is increasing so the number of electron shells are increasing so the force between the nucleus of the element and the farthest shell is weaker. This means when another element that would react with an element in group 1 comes along (group 7) the pull from the nucleus of the group 7 element's nucleus is stronger than that of the attraction from the nucleus of group 1 element causing a reaction. Electron shielding causes the electrons on the outer energy level to be lost first.
Wiki User
∙ 11y ago
Wiki User
∙ 8y ago- the atoms become smaller
-the electron shielding decreases
the ability to gain an electron into the p sub-shell increases to form a halide ion.
- the oxidising powers of halogens increase
xx JLA
Wiki User
∙ 12y agoThe further down a group you progress the less stable the atoms are because the nuclei can't hold on to their electrons as well when they're further away and there are more of them. This means that atoms give up their electrons more easily in a reaction.
Wiki User
∙ 12y agoActually the reactivity increases as you go down a group. The number of shells increases and so the effective nuclear charge on the valence electrons decreases.the valence electrons are in the outermost shell so they can be lost easily.
Wiki User
∙ 11y agoMetals react by losing electrons. As you descend the periodic table, to heavier and heavier elements, in most cases the valence electrons become easier to detach from the atom, simply because they are farther from the nucleus. Even though the nucleus is itself larger, and therefore has a larger positive charge and a stronger attraction to electrons, it is also true that increasing distance from the nucleus is a more dominant effect since the effect of distance depends upon the square of the distance.
Wiki User
∙ 11y agoi was wondering the same thing!!
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What is the more reactive metal Cs or Na?
'Cs' ( Caesium )is the more reactive metal. Both metals are in Groujp (I) , The alkali metals. On going down from lithium to francium , group(I) metals become more reactive.,
What are the most reactive elements in the group of akali metals?
Alkali metals are the elements in the 1st group. In the 1st group,the reactivity of the elements increase down the group. Cs is the most reactive alkali metal.
What is the most reactive group of elements in the periodic table?
Alkali Metals (group 1) because they only need to lose one electron in order to have a stable valence level of 8. As you go down the alkali metals group, the elements become more reactive. So Francium is the most reactive alkali metal. Also, Halogens, because they already have 7 electrons and only need to gain one in order to have a stable valence level of 8. As you go up the halogens group, the elements become more reactive. So Fluorine is the most reactive halogen. This is just a brief summary, if you want to know the reasons why this is I suggest you search about ionization energy, electron affinity, and electronegativity because these are all what make an element "reactive."
Are alkali earth metals reactive?
Alkali metals, those elements from Group 1 of the periodic table, are extremely reactive. The metals lithium (Li), sodium (Na), potassium (K), rubidium (Rb), caesium (Cs) and francium (Fr) are those elements. Their reactivity increasesas we move down through the group. See the related question below to find out why these metals are so reactive.
Do the halogens become more reactive or less reactive as they go lower down the group?
The most reactive halogens - fluorone and chlorine - are in the upper part of the group.
What is the more reactive metal Cs or Na?
'Cs' ( Caesium )is the more reactive metal. Both metals are in Groujp (I) , The alkali metals. On going down from lithium to francium , group(I) metals become more reactive.,
How does metals or nonmetals change as you go down group 0?
As you go down Group 0 (also known as the noble gases), both metals and nonmetals tend to become less reactive. The noble gases are already very stable and unreactive, and this reactivity decreases even further as you move down the group. Metals in Group 0, called alkali metals, also become more reactive as you go down the group, while nonmetals in Group 0, known as halogens, become less reactive.
Are the most reactive metals in the middle of the periodic table?
No the most reactive metals are in the first group on the periodic table. They get more reactive as you go down a group
Why do alkali metals become more reactive the farther you go down on the periodic table?
The ionization energy is lower down in the group.
What are the most reactive elements in the group of akali metals?
Alkali metals are the elements in the 1st group. In the 1st group,the reactivity of the elements increase down the group. Cs is the most reactive alkali metal.
What kind of group one are the most reactive?
The elements in group 1 become more reactive as you go down the group.
Are transition metals on the periodic table reactive?
yes, they are less reactive than group 1 and 2. These metals hardly react with air or water at all whereas Group 1 and 2 metals tarnish quickly and react with water
Which group of metals is highly reactive?
Group 1 on the periodic table, known as the alkali metals, are the most reactive group of metals. They all share the chemical property of having just 1 valence electron. First ionization energies for these elements is quite low, and as you go down the group from top to bottom it gets lower. The alkali metals are so reactive that they do not exist elementally in nature; only in compounds. Sodium and potassium are the most common. Francium is the rarest.
Where are most reactive metals found in periodic table?
The most reactant group is the alkaline metals. but they only really start getting really reactive the more you move down the alkali metals.
Is it true that the most chemically reactive metals are in group 1 of the periodic table of elements?
Yes. The most chemically reactive metals are in group 1. To add to that, as you go down the periodic table, in group 1, they become more reactive. Potassium is more reactive than Sodium, and Cesium is more reactive than Rubidium. The same general trend occurs throughout the periodic table. The lower down you go in any given column, the elements are more reactive than the last, and the further left you go in each row, the elements are more reactive than the last. (There are exceptions however.) It has to do with electronegativity.
What is the most reactive group of elements in the periodic table?
Alkali Metals (group 1) because they only need to lose one electron in order to have a stable valence level of 8. As you go down the alkali metals group, the elements become more reactive. So Francium is the most reactive alkali metal. Also, Halogens, because they already have 7 electrons and only need to gain one in order to have a stable valence level of 8. As you go up the halogens group, the elements become more reactive. So Fluorine is the most reactive halogen. This is just a brief summary, if you want to know the reasons why this is I suggest you search about ionization energy, electron affinity, and electronegativity because these are all what make an element "reactive."
Are alkali earth metals reactive?
Alkali metals, those elements from Group 1 of the periodic table, are extremely reactive. The metals lithium (Li), sodium (Na), potassium (K), rubidium (Rb), caesium (Cs) and francium (Fr) are those elements. Their reactivity increasesas we move down through the group. See the related question below to find out why these metals are so reactive.
